B2U Storage Solutions, a provider of large-scale energy storage systems using second-life electric vehicle (EV) batteries, announced that 25MWh of storage capacity is now operational at its SEPV Sierra hybrid solar + storage facility in Lancaster, California. The project’s storage capacity is comprised of 1,300 reused EV battery packs sourced from Honda and Nissan.

The Sierra hybrid storage facility is interconnected directly to the grid, selling power and grid services into California’s wholesale power market, generating over $1M in revenue in 2022 alone, the company says. Sierra initiated commercial operations in 2020, with the team scaling its capacity in phases. This deployment represents the largest operational UL 9540-certified ESS utilizing second-life EV batteries anywhere on any continent showcasing B2U’s patented EV Pack Storage (EPS) technology, the company says. In addition to deploying Honda and Nissan EV batteries at scale, B2U says it has successfully tested GM Bolt and Tesla Model 3 battery packs with its EPS system, demonstrating the ability of the EPS system to be configured to operate any EV battery.

B2U says its business model to deploy EV batteries in second-life applications in large-scale ESS is well-suited to the challenges of EV battery reuse, where the available capacity of second-life EV batteries is expanding rapidly and may exceed 200 GWh by 2030, based on market analysis conducted by McKinsey.